EP 0146669 B1 19910410 - IMPROVED POLY(ARYL ETHER)S
Title (en)
IMPROVED POLY(ARYL ETHER)S
Publication
Application
Priority
US 48594883 A 19830418
Abstract (en)
[origin: US4473684A] Poly(aryl ether)s which contain at least 20% by weight of bis-(3,5-dimethyl-4-oxyphenyl)sulfone structural units exhibit improved glass transition temperatures, improved flame resistance, improved gas permeability and improved alloying compatibility.
IPC 1-7
IPC 8 full level
C08L 81/06 (2006.01); C08G 65/40 (2006.01); C08G 75/23 (2006.01); C08L 71/00 (2006.01); C08L 81/00 (2006.01)
CPC (source: EP US)
C08G 75/23 (2013.01 - EP US); C08L 71/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
US 4473684 A 19840925; AT E62498 T1 19910415; CA 1210891 A 19860902; DE 3484426 D1 19910516; EP 0146669 A2 19850703; EP 0146669 A3 19870819; EP 0146669 B1 19910410; FI 73700 B 19870731; FI 73700 C 19871109; FI 844999 A0 19841218; FI 844999 L 19841218; JP H0136849 B2 19890802; JP S60501112 A 19850718; NO 844785 L 19841130; WO 8404101 A1 19841025
DOCDB simple family (application)
US 48594883 A 19830418; AT 84104390 T 19840418; CA 452326 A 19840418; DE 3484426 T 19840418; EP 84104390 A 19840418; FI 844999 A 19841218; JP 50205684 A 19840416; NO 844785 A 19841130; US 8400576 W 19840416